Hands down.

I'm neutral towards Diaspro, but I strongly dislike Selina.

Selina isn't that bad, but Diaspro is just amazing!

I swear, Selina will just end up like a sniffling little cry-baby at the end of the season. She'll free Acheron but instead of giving her power, he'll be like, "sorry babe I only stick out for número uno." and ditch her ass. She'll probably turn to the Winx and help take him down or something. Plus, if you need to rely on once knowing Bloom to make yourself have some kind of depth or intrgiue...that's just pretty weak right there. Diaspro didn't need Bloom to get interesting. Bloom was the one who made her interesting, because Bloom was stupid enough to attack her; gaining sympathy from me. Plus the whole thing where Bloom basically stole Diaspro's fiancé. And at least Diaspro has the balls to go to two bad-ass villains for help in getting what she wants (Valtor and the Trix). Selina don't do crap. She's boring and is starting to get on my nerves.

Only because I dislike Diaspro.

I prefer Diaspro.

I like Diaspro

Selina lost me for multiple reasons.
-She was scared of the winx when she first saw them hid behind Stormy or Darcy. Scaredy cat.
-I'm gonna go ahead she doesn't know what a hairbrush is. Shame.
-She seems really dull other than that book and untamed hair.

Diaspro was a persistent "Villian" In winx club that made many recurrences . She has better hair than Selina and Diaspro is pretty sneaky and mischievous.

Selina.

She's a good villain